基于地质雷达探测的煤—岩分界面实验分析

Experimental Analysis of Coal- rock Interface Based on Geological Radar Detection

煤矿巷道掘进过程中,如果煤层相对比较厚无法进行全断面掘进,会在巷道的顶板或底板留有一定厚度的煤层,等待工作面回采过程中再次全部回采。因此,需要事先了解煤层顶—底板的煤层的变换,即煤岩界面的实时快速的识别。本测试实验地点在单候煤矿巷道下进行,利用煤和岩石的物理电性差异,采用高频电磁波反射方法(即探地雷达方法)识别煤—岩界面。最终得出单侯煤矿5104工作面43.8 m和50.2 m测区煤—岩分界面变化图。

In the process of coal mine roadway excavation, if the coal seam is relatively thick, the whole face excavation can not be carried out, it will leave a certain thickness of coal seam in the roof or floor of the roadway, and wait for the mining process in the working face. Therefore, it is necessary to understand the coal seam transformation of the coal seam roof and floor, that is the fast real - time recognition of coal rock interface. This test is carried out in the roadway of Shanhou coal mine, with the use of physical electrical differences of coal and rock, and high - frequency electromagnetic wave reflection method （ that is the method of ground penetrating radar） to identify coal rock interface. Finally the changing map of coal rock interface is concluded at -43.8 m and 50. 2 m measured area of 5104 working face in Shanhou coal mine.